Attributes computing list of ASTNodes are not shown as dashed, computed arrows to those ASTNodes

In the use case of jastadd/ros3rag, computeOperations() on DifferenceObjectAtWrongPlace is actually a java.util.List<Operation> but not shown as dashed, computed arrows. It is included as a normal token value:

computeOperations() = [de.tudresden.inf.st.placeB.ast.ConfigChange@1e912968, de.tudresden.inf.st.placeB.ast.PickAndPlace@ffdce5d, de.tudresden.inf.st.placeB.ast.PickAndPlace@2de3ad4c]